/* Theme: light by default, dark by system preference, and either one when chosen (data-theme). */
:root {
  --accent: #c40028;
  --accent-hover: #d8183f;
  --accent-2: #ff6b7d;
  --on-accent: #fff;
  --bg: #fffafa;
  --text: #1a1415;
  --muted: #5d5254;
  --card: #fff;
  --soft: #fbeff0;
  --border: #f0dcde;
  --shadow: 0 1px 2px rgba(60, 10, 20, .05), 0 18px 40px -22px rgba(120, 10, 30, .35);
  --glow: rgba(196, 0, 40, .16);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --accent: #ff4e63; --accent-hover: #ff6f80; --accent-2: #ff8895; --on-accent: #1a0b0e; --bg: #0f0c0d; --text: #f5f0f1; --muted: #b5a9ac;
    --card: #191415; --soft: #241a1c; --border: #2f2427; --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 18px 40px -22px rgba(0, 0, 0, .8); --glow: rgba(255, 78, 99, .18);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --accent: #ff4e63; --accent-hover: #ff6f80; --accent-2: #ff8895; --on-accent: #1a0b0e; --bg: #0f0c0d; --text: #f5f0f1; --muted: #b5a9ac;
  --card: #191415; --soft: #241a1c; --border: #2f2427; --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 18px 40px -22px rgba(0, 0, 0, .8); --glow: rgba(255, 78, 99, .18);
  color-scheme: dark;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
body {
  margin: 0; color: var(--text); font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  background-color: var(--bg);
  background-image: radial-gradient(900px 500px at 85% -5%, var(--glow), transparent 60%), radial-gradient(700px 420px at -5% 25%, var(--glow), transparent 60%);
  background-repeat: no-repeat;
}
a { color: var(--accent); }
svg { fill: currentColor; }
h1, h2, h3, p { margin: 0; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 6px; }

/* header */
.top { max-width: 1120px; margin: 0 auto; padding: 18px 24px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 700; }
.brand svg { width: 26px; height: 26px; color: var(--accent); }
.icon-button { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 50%; border: 1px solid var(--border); background: var(--card); color: var(--text); cursor: pointer; box-shadow: var(--shadow); }
.icon-button { transition: background-color .15s ease, border-color .15s ease, color .15s ease; }
.icon-button:hover { background: var(--soft); border-color: var(--accent); color: var(--accent); }
.icon-button svg { width: 22px; height: 22px; grid-area: 1 / 1; }
.icon-button .moon { display: none; }
:root[data-theme="dark"] .icon-button .sun, .icon-button[aria-pressed="true"] .sun { display: none; }
:root[data-theme="dark"] .icon-button .moon, .icon-button[aria-pressed="true"] .moon { display: block; }

main, .foot { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* pin step */
.pin { display: flex; align-items: center; gap: 22px; margin: 8px 0 0; padding: 12px 18px; background: var(--card); border: 1px solid var(--border); border-left: 4px solid var(--accent); border-radius: 16px; box-shadow: var(--shadow); }
.pin-text { flex: 1; min-width: 0; }
.pin-title { display: flex; align-items: center; gap: 8px; font-weight: 800; }
.pin-title svg { width: 22px; height: 22px; color: var(--accent); }
.pin-body { color: var(--muted); font-size: .95rem; line-height: 1.45; }
.pin-body strong { color: var(--text); }
.pin [data-show="done"] { display: none; }
.pin[data-state="pinned"] [data-show="todo"] { display: none; }
.pin[data-state="pinned"] [data-show="done"] { display: flex; }
.pin[data-state="pinned"] p[data-show="done"] { display: block; }
.pin[data-state="pinned"] .pin-art { display: none; }
.pin-art { display: flex; align-items: center; gap: 8px; flex: none; }
.mock-arrow { width: 18px; height: 18px; color: var(--muted); flex: none; }
.mock-toolbar { display: flex; align-items: center; gap: 6px; padding: 5px 8px; border-radius: 10px; background: var(--soft); border: 1px solid var(--border); }
.mock-toolbar i { width: 22px; height: 6px; border-radius: 3px; background: var(--border); }
.mock-puzzle { display: grid; place-items: center; width: 26px; height: 26px; border-radius: 8px; background: var(--accent); color: var(--on-accent); animation: nudge 2s ease-out infinite; }
.mock-puzzle svg { width: 16px; height: 16px; }
.mock-menu { padding: 5px 6px; border-radius: 10px; background: var(--card); border: 1px solid var(--border); box-shadow: var(--shadow); }
.mock-row { display: flex; align-items: center; gap: 6px; font-size: .78rem; }
.mock-row > svg { width: 14px; height: 14px; color: var(--accent); }
.mock-row b { font-weight: 700; white-space: nowrap; padding-right: 4px; }
.mock-pin { display: grid; place-items: center; width: 24px; height: 24px; border-radius: 7px; background: var(--soft); color: var(--accent); }
.mock-pin svg { width: 14px; height: 14px; }
@media (max-width: 760px) { .pin { flex-direction: column; align-items: flex-start; gap: 10px; } }
@media (max-width: 420px) { .mock-toolbar i { display: none; } }
@media (min-width: 940px) and (max-height: 760px) { .pin { padding: 8px 14px; margin-top: 2px; gap: 16px; } .pin-body { font-size: .88rem; } }

/* hero */
.hero { display: grid; gap: 48px; padding: 24px 0 56px; align-items: center; }
@media (min-width: 940px) { .hero { grid-template-columns: 1.05fr 1fr; padding-top: 56px; } }
.mascot { width: 104px; height: 104px; margin-bottom: 8px; }
.mascot svg { width: 100%; height: 100%; overflow: visible; fill: none; }
.swing { transform-origin: 60px 16px; animation: ring 1.6s ease-in-out .6s 2; }
.mascot:hover .swing { animation: ring 1.2s ease-in-out; }
@keyframes ring { 0%, 60%, 100% { transform: rotate(0); } 8% { transform: rotate(16deg); } 18% { transform: rotate(-14deg); } 28% { transform: rotate(10deg); } 38% { transform: rotate(-7deg); } 48% { transform: rotate(3deg); } }
.eyebrow { font-weight: 700; letter-spacing: .08em; text-transform: uppercase; font-size: 13px; color: var(--accent); }
h1 { font-size: clamp(2.3rem, 5.4vw, 3.9rem); line-height: 1.06; letter-spacing: -.02em; font-weight: 800; margin: 8px 0 18px; }
.grad { background: linear-gradient(90deg, var(--accent), var(--accent-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 34em; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 14px; }
.fine { font-size: .9rem; color: var(--muted); }

.button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 13px 22px; border-radius: 999px; font-weight: 700; text-decoration: none; border: 2px solid transparent; cursor: pointer; font-size: 1rem; transition: background-color .15s ease, border-color .15s ease, color .15s ease, box-shadow .15s ease; }
.button.primary { background: var(--accent); color: var(--on-accent); box-shadow: 0 10px 24px -10px var(--accent); }
.button.primary:hover { background: var(--accent-hover); box-shadow: 0 12px 26px -10px var(--accent-hover); }
.button.ghost { border-color: var(--border); color: var(--text); background: var(--card); }
.button.ghost:hover { background: var(--soft); border-color: var(--accent); color: var(--accent); }
.button.small { padding: 8px 16px; font-size: .9rem; }
.button svg { width: 20px; height: 20px; flex: none; }

@media (min-width: 940px) and (max-height: 760px) {
  .top { padding-top: 10px; padding-bottom: 6px; }
  .hero { padding-top: 4px; gap: 40px; }
  .mascot { width: 64px; height: 64px; margin-bottom: 0; }
  h1 { font-size: clamp(2.1rem, 4.3vw, 3.1rem); margin: 4px 0 12px; }
  .lead { font-size: 1.05rem; }
  .cta { margin: 18px 0 10px; }
}

/* demo */
.demo-title { font-size: 1.05rem; font-weight: 800; color: var(--accent); margin-bottom: 12px; }
.demo { position: relative; background: var(--card); border: 1px solid var(--border); border-radius: 22px; padding: 14px; box-shadow: var(--shadow); max-width: 540px; }
.player { position: relative; aspect-ratio: 16 / 9; border-radius: 14px; overflow: hidden; background: #1c0f12; }
.art { position: absolute; inset: 0; background: radial-gradient(120% 90% at 20% 110%, #ff6b7d 0, transparent 55%), radial-gradient(90% 80% at 90% 0, #7a3cff 0, transparent 55%), linear-gradient(160deg, #2a1021, #130a14); }
.play { position: absolute; left: 50%; top: 50%; width: 64px; height: 64px; margin: -32px 0 0 -32px; border-radius: 50%; background: rgba(255, 255, 255, .18); backdrop-filter: blur(4px); }
.play::after { content: ""; position: absolute; left: 25px; top: 19px; border-left: 20px solid #fff; border-top: 13px solid transparent; border-bottom: 13px solid transparent; }
.scrub { position: absolute; left: 0; right: 0; bottom: 0; height: 4px; background: rgba(255, 255, 255, .3); }
.scrub i { display: block; width: 34%; height: 100%; background: #ff0033; }
.meta { padding: 12px 4px 4px; }
.vtitle { font-weight: 700; }
.channel { font-size: .9rem; color: var(--muted); }
.bar { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; padding: 10px 4px 4px; }
.pill { display: inline-flex; align-items: center; gap: 6px; min-height: 40px; padding: 0 16px; border-radius: 999px; background: var(--soft); color: var(--text); font-weight: 600; font-size: .9rem; border: 0; }
.pill.round { width: 40px; padding: 0; justify-content: center; }
.pill svg { width: 22px; height: 22px; }
button.pill { cursor: pointer; transition: background-color .15s ease, box-shadow .15s ease; }
.pill.bell:hover { background: color-mix(in srgb, var(--accent) 16%, var(--soft)); }
.bell.nudge { animation: nudge 2s ease-out infinite; }
@keyframes nudge { 0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 55%, transparent); } 70%, 100% { box-shadow: 0 0 0 14px transparent; } }
.demo-hint { display: flex; align-items: center; gap: 8px; margin: 0; padding: 4px 6px; font-weight: 700; font-size: .92rem; color: var(--accent); }
.demo-hint svg { width: 18px; height: 18px; flex: none; }
.bell .filled { display: none; }
.bell.active { color: var(--accent); animation: pop .5s ease; }
.bell.active .filled { display: block; }
.bell.active .outline { display: none; }
@keyframes pop { 0% { transform: scale(1); } 40% { transform: scale(1.25) rotate(-12deg); } 100% { transform: scale(1); } }

.dialog { position: absolute; inset: 0; z-index: 3; display: grid; place-items: center; padding: 14px; background: rgba(10, 4, 6, .55); border-radius: 22px; }
.panel { width: min(100%, 330px); background: var(--card); border-radius: 16px; padding: 16px; box-shadow: 0 20px 50px rgba(0, 0, 0, .4); }
.panel-title { display: flex; align-items: center; gap: 8px; font-weight: 800; margin-bottom: 10px; }
.panel-title svg { width: 22px; height: 22px; color: var(--accent); }
.options { border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
.option { display: flex; width: 100%; justify-content: space-between; gap: 10px; align-items: center; padding: 11px 14px; background: transparent; color: var(--text); border: 0; border-top: 1px solid var(--border); font: inherit; font-weight: 600; cursor: pointer; text-align: left; }
.option:first-child { border-top: 0; }
.option:hover, .option:focus-visible { background: var(--soft); }
.option .hint { color: var(--muted); font-weight: 400; font-size: .85rem; }
.link-button { display: block; margin: 10px 0 0 auto; background: none; border: 0; color: var(--muted); font: inherit; font-weight: 600; cursor: pointer; padding: 6px 4px; }
.link-button:hover { color: var(--text); }

.slot { min-height: 58px; padding: 10px 4px 0; }
.toast { display: flex; width: fit-content; max-width: 100%; align-items: center; gap: 14px; padding: 11px 16px; border-radius: 10px; background: var(--text); color: var(--bg); font-weight: 600; font-size: .92rem; box-shadow: 0 8px 24px rgba(0, 0, 0, .35); animation: rise .3s ease; }
.toast button { background: none; border: 0; color: inherit; font: inherit; font-weight: 800; text-transform: uppercase; letter-spacing: .03em; cursor: pointer; padding: 4px 8px; margin: -4px -8px -4px 0; border-radius: 6px; }
.toast button:hover { background: rgba(128, 128, 128, .3); }
@keyframes rise { from { opacity: 0; transform: translateY(8px); } }

.notice { position: absolute; z-index: 5; top: 22px; right: 22px; width: min(78%, 330px); background: #2a2224; color: #f6f1f2; border-radius: 14px; padding: 12px 14px; box-shadow: 0 16px 40px rgba(0, 0, 0, .5); animation: slide .45s cubic-bezier(.2, .9, .3, 1.2); }
@keyframes slide { from { opacity: 0; transform: translate(26px, -10px) scale(.96); } }
.notice-head { display: flex; justify-content: space-between; font-size: .75rem; color: #b9adb0; margin-bottom: 8px; }
.notice-body { display: flex; gap: 10px; align-items: center; }
.notice-body strong, .notice-body span { display: block; font-size: .85rem; line-height: 1.35; }
.notice-body span { color: #b9adb0; }
.thumb { flex: none; width: 58px; height: 36px; border-radius: 6px; background: linear-gradient(135deg, #ff6b7d, #7a3cff); }
.notice-actions { display: flex; gap: 8px; margin-top: 10px; }
.notice-actions button { flex: 1; padding: 8px; border: 0; border-radius: 8px; background: #3b3134; color: #fff; font: inherit; font-weight: 600; font-size: .82rem; cursor: pointer; }
.notice-actions button:first-child { background: #ff4e63; color: #1a0b0e; }
.notice-actions button:hover { filter: brightness(1.15); }

.result { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-top: 12px; padding: 14px 16px; border-radius: 14px; background: var(--soft); border: 1px solid var(--border); font-weight: 600; max-width: 540px; }
.demo-caption { margin-top: 14px; font-size: .85rem; color: var(--muted); max-width: 540px; }

/* sections */
.section { padding: 56px 0; }
.section h2 { font-size: clamp(1.7rem, 3.4vw, 2.4rem); line-height: 1.15; letter-spacing: -.015em; font-weight: 800; margin-bottom: 28px; }
.steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 18px; }
@media (min-width: 800px) { .steps { grid-template-columns: repeat(3, 1fr); } }
.steps li { position: relative; padding: 26px; background: var(--card); border: 1px solid var(--border); border-radius: 20px; box-shadow: var(--shadow); transition: transform .2s ease; }
.steps li:hover { transform: translateY(-4px); }
.num { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 50%; background: var(--accent); color: var(--on-accent); font-weight: 800; margin-bottom: 14px; }
.steps h3, .grid h3 { font-size: 1.15rem; margin-bottom: 6px; }
.steps p, .grid p { color: var(--muted); }

.grid { display: grid; gap: 18px; }
@media (min-width: 640px) { .grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 960px) { .grid { grid-template-columns: repeat(4, 1fr); } }
.grid article { padding: 20px; background: var(--card); border: 1px solid var(--border); border-radius: 20px; box-shadow: var(--shadow); display: flex; flex-direction: column; transition: transform .2s ease; }
.grid article:hover { transform: translateY(-4px); }
.grid p { font-size: .95rem; }
.visual { display: flex; align-items: center; justify-content: center; gap: 8px; height: 132px; overflow: hidden; margin-bottom: 16px; padding: 14px; border-radius: 14px; background: var(--soft); }
.visual.col { flex-direction: column; align-items: stretch; }
.visual.wrap { flex-wrap: wrap; }
.chip-ui { display: inline-flex; align-items: center; justify-content: center; min-height: 30px; padding: 0 12px; border-radius: 999px; background: var(--card); border: 1px solid var(--border); font-size: .8rem; font-weight: 700; }
.chip-ui.round { width: 30px; padding: 0; }
.chip-ui.hot { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.chip-ui svg { width: 16px; height: 16px; }
.menu-row { display: flex; align-items: center; gap: 6px; padding: 6px 10px; border-radius: 8px; background: var(--card); font-size: .8rem; font-weight: 600; }
.menu-row svg { width: 14px; height: 14px; }
.menu-row.hot { background: var(--accent); color: var(--on-accent); }
.note-ui { padding: 9px 12px; border-radius: 10px; background: var(--card); border-left: 4px solid var(--accent); font-size: .8rem; font-weight: 600; }
.note-ui.strong { font-weight: 800; }
.row-ui { display: flex; gap: 6px; flex-wrap: wrap; }
.toolbar-ui { position: relative; display: grid; place-items: center; width: 52px; height: 52px; border-radius: 14px; background: var(--card); border: 1px solid var(--border); color: var(--accent); }
.toolbar-ui svg { width: 26px; height: 26px; }
.toolbar-ui b { position: absolute; top: -7px; right: -9px; min-width: 22px; height: 22px; padding: 0 6px; display: grid; place-items: center; border-radius: 999px; background: var(--accent); color: var(--on-accent); font-size: .75rem; }
.swatch { width: 52px; height: 52px; border-radius: 14px; border: 1px solid var(--border); }
.swatch.light { background: linear-gradient(135deg, #fff 55%, #c40028 55%); }
.swatch.dark { background: linear-gradient(135deg, #0f0c0d 55%, #ff4e63 55%); }

.privacy { text-align: center; max-width: 720px; margin: 0 auto; }
.privacy p { color: var(--muted); font-size: 1.1rem; }
.ticks { list-style: none; display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin: 24px 0; padding: 0; }
.ticks li { display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px 8px 10px; border-radius: 999px; background: var(--card); border: 1px solid var(--border); font-weight: 700; }
.ticks svg { width: 22px; height: 22px; color: var(--accent); }

.support-card { text-align: center; padding: 48px 24px; border-radius: 28px; background: linear-gradient(135deg, var(--soft), var(--card)); border: 1px solid var(--border); box-shadow: var(--shadow); }
.support-card h2 { margin-bottom: 12px; }
.support-card > p { max-width: 34em; margin: 0 auto; color: var(--muted); font-size: 1.1rem; }
.support-card .cta { justify-content: center; }
.support-card > p.cta { margin: 26px auto 14px; }
.cup { width: 56px; height: 56px; margin: 0 auto 8px; color: var(--accent); animation: float 3s ease-in-out infinite; }
.cup svg { width: 100%; height: 100%; }
@keyframes float { 50% { transform: translateY(-6px); } }

.foot { padding-top: 24px; padding-bottom: 56px; text-align: center; color: var(--muted); font-size: .92rem; display: grid; gap: 6px; }
.foot a { color: inherit; }
.legal { font-size: .8rem; max-width: 44em; margin: 6px auto 0; }

@media (max-width: 560px) {
  .notice { top: 10px; right: 10px; left: 10px; width: auto; padding: 10px 12px; }
  .notice-body span { display: none; }
  .notice-actions { margin-top: 8px; }
  .notice-actions button { padding: 7px; }
  .dialog { padding: 8px; overflow: auto; }
  .panel { padding: 12px; }
  .option { padding: 9px 12px; }
  .toast { font-size: .85rem; gap: 10px; }
  .slot { min-height: 86px; } /* the confirmation wraps to two lines here */
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}